Research Progress on Detection Technology of Composite Electrical Traction Steel Strip for Elevator

Aiming at the problems such as detection accuracy, damage identification, and performance evaluation in the inspection and testing of elevator composite traction steel strips, the related research results of nondestructive testing of elevator composite traction steel strips at home and abroad are comprehensively analyzed, and the future is summarized and proposed Research direction. First, the structural characteristics of composite traction steel strips for elevators in use today are introduced, and the advantages of composite traction steel strips for elevators on steel steel ropes are specifically analyzed. Second, the development of nondestructive testing technology is introduced, and the research and application of non-destructive testing of composite steel strips and steel steel ropes for elevators are emphasized. Among them, non-destructive testing of steel steel ropes mainly including AC electromagnetic method, permanent magnet method, magnetic flux leakage method and residual magnetism method. The detection methods of composite steel strip mainly include magnetic flux test method, life setting method and resistance test method. Finally, on the basis of comparing the current non-destructive testing methods, a differential field-weak non-destructive testing method of dual magnetic circuits is proposed, and the research trend of defect detection of elevator traction steel strips is pointed out.